/*
 * This file is part of VLCJ.
 *
 * VLCJ is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * VLCJ is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with VLCJ.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Copyright 2009, 2010 Caprica Software Limited.
 */

package uk.co.caprica.vlcj.player.direct;

import com.sun.jna.Memory;

/**
 * A render call-back adapter implementation that fills an array of rgb integer
 * data for an entire video frame.
 */
public abstract class RenderCallbackAdapter implements RenderCallback {

  /**
   * Video data buffer.
   */
  private final int[] rgbBuffer;
  
  /**
   * Create a new render call-back.
   * 
   * @param rgbBuffer video data buffer
   */
  public RenderCallbackAdapter(int[] rgbBuffer) {
    this.rgbBuffer = rgbBuffer;
  }
  
//  @Override
  public final void display(Memory nativeBuffer) {
    nativeBuffer.read(0, rgbBuffer, 0, rgbBuffer.length);
    onDisplay(rgbBuffer);
  }

  /**
   * Get the video data buffer.
   * 
   * @return video buffer
   */
  public int[] rgbBuffer() {
    return rgbBuffer;
  }

  /**
   * Template method invoked when a new frame of video data is ready.
   * 
   * @param rgbBuffer video data buffer
   */
  protected abstract void onDisplay(int[] rgbBuffer);
}
